1000 W Inverter Circuit Diagram - Capacity: Capacity of the inverter is the maximum load that you can be connected with the inverter.For example if the capacity of a Solar inverter is 1 Kilowatt, you can connect maximum 1 KW load to that inverter. 1 Kilowatt is considered sufficient for average home usage.. The above FM transmitter design is a result of many hours of testing and tweaking. The goal was simple; to test many existing BA1404 transmitter designs, compare their performance, identify weaknesses and come up with a new BA1404 transmitter design that improves sound quality, has very good frequency stability, maximizes transmitter's range, and is fairly simple for everyone to build..